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  1. cathode bypass on opt secondary
  2. Push Pull Powersupply Test Question?
  3. Recommandation please..
  4. My new humble thread
  5. KT88 single stage pp - cascode diff amp
  6. foot switch safety question
  7. Which KT88 Brand to Buy?Sso many to choose
  8. 12ax7 perfect bias point
  9. preamplifier/driver for 807
  10. Help with Quad II hum
  11. 18K audio note output transformer
  12. Small tube amp conversion help 6x4, 6AU6, 6AQ5
  13. Hybrid never see
  14. "Next to Last" PAS Project
  15. Power supply overload
  16. Home build 6L6 pp amp buzzing noise
  17. 807 monoblocks with big PSU
  18. SET amps and crossovers.....?
  19. Sockets for 6P41S
  20. 6dj8 phono amp
  21. Jolida Score!!!!
  22. voltage boost
  23. Swinging choke value in PSUD
  24. Hum Nirvana
  25. Plates glowing on my Fender Concert after blowing fuse
  26. This weekend's reading
  27. 6550-6550A-6550B-6550C - What are exactly Differences ??
  28. Interstage Transformer Questions
  29. Vacuum State FVP5A voltages
  30. can you help me out? Sencore TC114 tube tester
  31. Steve Bench's tube crossover - Help needed.
  32. transformer design equations
  33. Retrofit idea, need advice, 6L6SE guitar amp
  34. some misc schematics, manley, rotel
  35. What happened to my tube??
  36. Tube Preamp Question
  37. Schematic for Pilot SP215
  38. Screen current through cathode resistors
  39. Gyrator design
  40. Any tips for routing heaters on a PCB
  41. 6EZ5 as drop in replacement for 6V6 tube?
  42. RIAA Preamp and equalization 12AX7
  43. Correct hum mods?
  44. Push-Pull from Stereo SE amp
  45. how to select transformers.
  46. Ultrapath or parallel feed apps. for 7591 amps?
  47. PP-UL amp with KT88
  48. Reuse these sockets and tube choice question
  49. Need help understanding this circuit
  50. Need a little help with a power supply I designed.
  51. Which tube Rectifier is good enough for 5902 tube amp ?
  52. Schematic for Masco ME-8?
  53. Transformer Rattle & Hum issue - Dynakit ST-70
  54. pio coupling caps - damaged/used?
  55. 6EZ8 (and other triple triodes) help please!
  56. Akron, Ohio
  57. 6N6P Heater and earth wiring advice
  58. united transformer corporation
  59. Capacitive v. Inductive inter-stage coupling
  60. unused secondaries on SE opt?
  61. Marco Rodint coil building info needed
  62. Scott 222B Hum
  63. how to make audio output transformer
  64. 5842 Anyone?
  65. 813 SE build
  66. Aikido LV improved psu
  67. My first HiFi project
  68. B&O 608 tube amplifier
  69. Just designed a 300b amplifier....
  70. Anyone used C3g to drive GM70?
  71. Capacitors found, have you used these?
  72. I need your help!!!!!
  73. 12au7 600 ohm output
  74. new C3g/211PSE comments pls
  75. anyone know of a source for 12 pin+ connectors?
  76. Dynaco Mark IV Power Resistor
  77. Moondog with ac on gain & driver tubes?
  78. need help again on DIY Toccata MC Phono preamp
  79. Looking for analog Tube schematic for "analogmetric 1541a" DAC
  80. newbie needs help with tube inheritance
  81. 2A3 SETs with Edcor Iron
  82. What to do with this iron (originally from PP 7355)
  83. Just for everyone's amusement....
  84. beam tetrode calculations
  85. What are the differences between LC and CLC chokes
  86. gain and mid circuits
  87. Kay 503 Schematics?
  88. Transformer Data
  89. tube B 406 triode dick's cleo 4
  90. GE Snubber, High Current DC, and Switching Capacitors
  91. Russian EL84 - Many varieties
  92. Back From the Dead- A NOS Tube Story
  93. application for ccs/gyrator board from the groupbuy
  94. Building a tube radio
  95. Three more articles for the WW Archive
  96. Amplifier antics
  97. what about a tube makes it UL recommended
  98. 6as7 p-p with transformer phase-splitter
  99. Large power push pull output transformers, say 150W
  100. I need a schematic for a amp project
  101. Preamp resistors calculation for http://www.shine7.com
  102. Best replacement solid state rectifiers for a 400V 125 mA supply in a tube amp
  103. Dynakit PAS-2 Filament Voltage Question - replaced Selenium rectifier
  104. Vintage tubes
  105. Amp PSU standby and PA switching
  106. 245 tubes
  107. Vacuum tube clock radio
  108. First Project, need some help
  109. Graetz Scerzo Schematic
  110. simple se 2a3 amp help!!!!!
  111. 5bc3 rectifier
  112. Help me improve this PSU. (6c33 set, voltage doubler)
  113. Choke Loaded Driver Load Lines Question
  114. CCS and tube aging
  115. Tetra lives!!!!!
  116. Tube shops/supplies in Brisbane/Gold Coast
  117. AC VT25 filament?
  118. Let's show go on: Building Monster SE!
  119. Mystery 6AQ5A powered chassis?
  120. 6Y6G tube for low-voltage SE amplifier?
  121. Jolida gain and negative feedback?
  122. 1/2 of the tube for each channel?
  123. Problem with Legacy pentode driver stage
  124. 845 Operating Point
  125. Tube rectifiers
  126. D76 Inrush current limiter thermistor?
  127. New to Tubes? How to get the basics, read on..
  128. interstage tansformer impedence
  129. 2 PSU sharing the same Power transformer?
  130. Biasing amp
  131. CCS placement
  132. clueless on console
  133. 5E3 Build Problems Cont'd
  134. Popping in stepped volume control
  135. 6by5 CRC Values
  136. Is this do-able?
  137. PCB for Gary Pimm's CCS & SS Pentode
  138. EL86 Single Ended PP Power Amplifier
  139. Diyhifisupply Billies - dead OPTs?
  140. 6H30P-DR
  141. Tube AMP and stax headphones....
  142. soft start power supply for dynaco st-70
  143. The Telefunken EF86?
  144. Can you run parallel circuits from a rectifier?
  145. Mullard 5-20 with 6L6GC's?
  146. Adding balanced input to 6N1P tube.
  147. Partial feedback (anode grid) with cathode follower
  148. 4P1L as First gain stage or in Pre-Amp..?
  149. Advice on 6418 design requested
  150. Shorting jumpers for octal sockets
  151. Tube lineup in an Admiral y4302
  152. John Broskie MIA?
  153. Audio Research VT 100 MKII need help!!
  154. Help with AD30 PSU build
  155. Who was the Japanese Amp Guru?
  156. 6922 vs an ECC82.....a test.
  157. Triode connected 6LW6 for SE
  158. 12AD7???
  159. New Book Review
  160. Hoax or truth about 6SJ7 (Equiv.: 6J8P/5693/CV3699/VT-116A).. ???
  161. looking for hi volt commercial power supplies
  162. 6L6, 6L6GT, 6L6GC, 5881, 7027, KT66...
  163. ECC85
  164. Pioneer 304B fm/am reciever schematic
  165. ECC82 JJ Made in Slovak Republic!?
  166. Definition of matched
  167. Polycarbonate as coupling caps?
  168. pick tubes for tubecad unbalancer
  169. OPT for EL34
  170. 12v dc tube amp/pre high SQ
  171. Better than 12au7?
  172. Amps and 4-ohm loads
  173. What is the "best" tube amp / speaker / source you have ever used?
  174. 814 as Triode / Max. Ug2 voltage
  175. valves better than solid state?
  176. musical fidelity x10d clone
  177. Acrosound 7591A amp
  178. suggestions for simple amp wanted
  179. Wish you could nail down your copper wool holder?
  180. HELP- Pricing Genuine Genalex KT77's
  181. K120 on 6550/KT88/KT90 anyone tried???
  182. do tubes ever leak b+ into heaters?
  183. How can I use these high-current, low-inductance chokes?
  184. 6005w Q+introduction
  185. Sonic Frontiers Line 3 Increate the Output Voltage
  186. Dynaco ST-70 chassis
  187. Opinion on the scheme with the 12AX7!
  188. Fully Parametric Tube EQ (with gyrators)
  189. 600v snap-in electrolytics
  190. anyone knows of 6 channel tube amplier ?
  191. 6N6P SE idea
  192. EL84
  193. Long tails and current sources
  194. How to reduce gain in mu-follower?
  195. Chassis
  196. Single Ended Amplifier 6P43P
  197. 6C33C spacing
  198. A very excitable Luminescence
  199. KT-88 Data sheet question.
  200. Good 12ax7
  201. Operating points theory...
  202. 1-stage (killer, literally) amp made of junk
  203. Two bridges and a CT transformer....
  204. What should clipping look like? (AKA reading sine waves)
  205. Combining coupling cap's
  206. Quicksilver Mono Amp Model 1300 - creating Auto Bias wanted
  207. 845 with kathode bias
  208. Mixing Resistor types?
  209. Looking for EI-75 80% perm ...
  210. Ambient temperature target
  211. Old radio
  212. JJ glowing twice as bright
  213. DPA150
  214. Discharging a capacitor - should I??
  215. German transformer builder
  216. 6P30B-V subminiature tube
  217. Improved Tube Headphones Amp
  218. Best method of reducing line voltage into vintage transformers?
  219. Harman-Kardon TA5000X, A500 or A50K OPT - Quality?
  220. hum measurement
  221. DIY 450VA+ multi-tapped tube power trafo
  222. DIY 450VA+ multi-tapped tube power trafo
  223. Duelund Alexander Copper Foil Capacitors
  224. Yaqin MS-20L tube recommendation
  225. Tube version of aleph-x. Is it possible?
  226. help - Looking for specs Trimax TA1439
  227. where can i get transformers in the UK?
  228. Mono 5W-17W Power Amp using EL84 push-pull
  229. Reference Books
  230. Tresco?
  231. BELL 3DT, Phono RIAA Odditty
  232. 6SL7/6V6 tubes in an RH84 SE amplifier?
  233. How to calculate max voltage swing in cathode follower?
  234. Power Transformer Temp
  235. Silvaweld OTL Tube Reference 100 schematics
  236. Need suggestion for 6.3V-0-6.3V
  237. Unison Research SMART 845
  238. 26/45 SE amp ?
  239. V2 rocket guidance system.
  240. Sweep Tube SEP
  241. Help me find cirquit, I forgot where I last saw it?
  242. Passive or Active? For Wet/Dry mix on valve driven reverb.
  243. Plate resistor for FVP5a
  244. Simulation
  245. DHT w/ DC heater - How to rig cathode bias?
  246. schematics needed- Luxman MQ70
  247. CSS for 6c33?
  248. Svetlana (Winged C) 6L6GC vs. the Others...
  249. Power Supply Help- 807's, High Voltage
  250. Looking for info about a 1940s Amp

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